pam_exec


SYNOPSIS
       pam_exec.so [debug] [expose_authtok] [seteuid] [quiet] [stdout]
                   [log=file] [type=type] command [...]

DESCRIPTION
       pam_exec is a PAM module that can be used to run an external command.

       The child's environment is set to the current PAM environment list, as
       returned by pam_getenvlist(3) In addition, the following PAM items are
       exported as environment variables: PAM_RHOST, PAM_RUSER, PAM_SERVICE,
       PAM_TTY, PAM_USER and PAM_TYPE, which contains one of the module types:
       account, auth, password, open_session and close_session.

       Commands called by pam_exec need to be aware of that the user can have
       controll over the environment.

OPTIONS
       debug
           Print debug information.

       expose_authtok
           During authentication the calling command can read the password
           from stdin(3).

       log=file
           The output of the command is appended to file

       type=type
           Only run the command if the module type matches the given type.

       stdout
           Per default the output of the executed command is written to
           /dev/null. With this option, the stdout output of the executed
           command is redirected to the calling application. It's in the
           responsibility of this application what happens with the output.
           The log option is ignored.

       quiet
           Per default pam_exec.so will echo the exit status of the external
           command if it fails. Specifying this option will suppress the
           message.

       seteuid
           Per default pam_exec.so will execute the external command with the
           real user ID of the calling process. Specifying this option means
           the command is run with the effective user ID.

MODULE TYPES PROVIDED
       All module types (auth, account, password and session) are provided.

RETURN VALUES
       PAM_SUCCESS
           The external command was run successfully.

       Add the following line to /etc/pam.d/passwd to rebuild the NIS database
       after each local password change:

                   password optional pam_exec.so seteuid /usr/bin/make -C /var/yp


       This will execute the command

           make -C /var/yp

       with effective user ID.

SEE ALSO
       pam.conf(5), pam.d(5), pam(7)

AUTHOR
       pam_exec was written by Thorsten Kukuk <kukuk@thkukuk.de> and Josh
       Triplett <josh@joshtriplett.org>.



Linux-PAM Manual                  09/19/2013                       PAM_EXEC(8)
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